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The AAPG/Datapages Combined Publications Database

Showing 33,118 Results. Searched 200,293 documents.

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Pore Pressure Prediction in Organic Shales of the Permian Basin: Rock Physics Basis

Prajnajyoti Mazumdar, Lev Vernik, Alex Dale

Unconventional Resources Technology Conference (URTEC)

...-matrix velocity of shale vs. TOC for constant Vcl =25% showing the Reuss and Hill lines (dotted black) and the final VPm model (red). Using the elastic...

2025

Flow Behavior of Ponded Turbidity Currents

Marco Patacci, Peter D.W. Haughton, William D. Mccaffrey

Journal of Sedimentary Research (SEPM)

...; this divides a lower outbound-moving layer from an upper return layer. The basal layer evolves to constant concentration and grain size, whereas...

2015

Ultrasound reverse time migration for human brain imaging

Ting Li, Bo Feng, Yang Zhou, Rongwei Xu, Huazhong Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

... method to accurately locate the location of cerebral hemorrhage. Li et al. (2022) performed ultrasound velocity inversion and reverse time migration...

2024

Maturation of Sediments Near Horizontal and Inclined Salt Sheets

K. Carter, I. Lerche

GCAGS Transactions

... 2. Far from the edge of the salt, the heat flow reduces to the one dimensional case of a constant heat flux flowing vertically through the salt...

1990

Reflection waveform inversion assisted by full-wavefield imaging

Mikhail Davydenko, Eric Verschuur

International Meeting for Applied Geoscience and Energy (IMAGE)

...-migration and computing velocity gradient using that image. In this paper, we modify the LSRTM approach to handle multiple scattering even when a smooth...

2022

Abstract: Azimuthal Processing For Unconventional Resource Plays Using An Orthorhombic Velocity Model; #90174 (2014)

Shaowu Wang and David Wilkinson

Search and Discovery.com

..., dip-moveout (DMO) removal and time migration. The estimation of velocity parameters for orthorhombic media is the key for azimuthal processing using...

2014

High-Resolution Anisotropic Earth Model Building on Conventional Seismic Data Using Full-Waveform Inversion: an Offshore Australia Case Study

Bee Jik Lim, Denes Vigh, Stephen Alwon, Saeeda Hydal, Martin Bayly, Chris Manuel, Dimitri Chagalov, Gary Hampson, Dimitri Bevc

Indonesian Petroleum Association

..., the initial starting model was derived from a smooth version of a reflection traveltime tomography velocity field derived from a depth migration workflow...

2014

Risks of Microseismic Fracture Mapping Mis-interpretation: Source-Dependent Sensitivity Induced by Surface Arrays Observational Bias

Pierre-Francois Roux

Unconventional Resources Technology Conference (URTEC)

...its amplitude larger than a given noise threshold. We have assumed that the detection is performed via a migration operation, as is often the c...

2017

Depth Imaging Coil Data: Multi Azimuthal Tomographic Earth Model Building and Imaging of Tulip (Paper A15)

S. Chen, M. Buia, L. Livraghi, M. Bakhrudin, M. Tham, M. Bayly, S. Ng, O. Zdraveva

Geological Society of Malaysia (GSM)

... can be investigated. In this case, observation of azimuth and offset organized butterfly gather QC displays indicated that azimuth velocity change...

2012

Resolving Seismic Attenuation Issue through Q-Migration, a Case Study in Sisi-Nubi Field, Indonesia

Bastian Hutahayan, Keat Huat Teng, Kelik Moersidin, Jacques Bonnafe, Natalia Anggriani, Cepi M. Adam

Indonesian Petroleum Association

...Resolving Seismic Attenuation Issue through Q-Migration, a Case Study in Sisi-Nubi Field, Indonesia Bastian Hutahayan, Keat Huat Teng, Kelik...

2015

Current Trends in Geophysics

H. E. Stommel, J. M. Graul

Indonesian Petroleum Association

... with the wrong velocity. The lower part of figure 19 demonstrates the potential benefits of migration before stack. In this procedure, common offset...

1978

Experimental and Field Studies on the Genesis of Sandstones

Gerard V. Middleton

Wyoming Geological Association

... to move by traction. In the first case, (a), the sediment size is very small and the velocity is very low—consequently there is a thick laminar...

1966

Mitigating cycle skipping in FWI through preconditioned multidimensional optimal transport

James McLeman, Tim Burgess, Tom Rayment, Victor Chua

International Meeting for Applied Geoscience and Energy (IMAGE)

... experiment which compares the L2 and KR objective functions when an initial velocity model is perturbed via scaling by a constant ratio. (5) Where I...

2022

Understanding The Mesozoics Beyond Basalt: A Case Study Of Sub-Basalt Imaging

S. Sengupta, S. K. Goswami, G. Menzel-Jones, B. Chowdhury, Artem Sazykin

Indonesian Petroleum Association

.... * WesternGeco • Low signal-to-noise ratio creating ambiguity in estimating accurate velocity model of subsurface. This case study demonstrates...

2020

Three Dimensional Exploration in California — A Case History

E. T. Selby

Indonesian Petroleum Association

... section and accurate velocity information are pre-requisites for successful migration; it is this information which allow the dips and depths...

1977

Abstract: Duplex Wave Migration … Imaging Vertical Boundaries; #90211 (2015)

Brian Link and Naum Marmalevsky

Search and Discovery.com

... methodology will only be recorded if the velocity depth model is characterized by significant vertical velocity heterogeneity. Duplex Wave Migration...

2015

Computer Modeling of Hydrocarbon Migration Pathways and Fluid Flow Histories from Carbon Isotope Anomalies in Gulf Coast Exploration Wells

D. F. Williams , Lerche , Z. Yu

GCAGS Transactions

... results described in this paper. CONCLUSIONS The subsurface hydrocarbon migration model illustrates a procedure for extracting the relative velocity...

1991

Abstract: Efficency and Accuracy Enhancement for One-way Wave Equation Migration Through Improved Mapping Function in the Time-shift Imaging Condition; #90171 (2013)

Mark Ng

Search and Discovery.com

... , (3) v ( x, z ) z 1 where v is interval velocity, and β is an empirical constant between 0.5 to 1 which is tuned to optimize a range of dips from...

2013

Chapter 10: Earthquake, Tomographic, Seismic Reflection, and Gravity Evidence for a Shallowly Dipping Subduction Zone beneath the Caribbean Margin of Northwestern Colombia

Rocio Bernal-Olaya, Paul Mann, Carlos A. Vargas

AAPG Special Volumes

..., 1967 in Case, 1980), raising the possibility that the presence of serpentinite within the fault zone at depth may also explain the low-velocity anomaly...

2015

Know Before You Go!

Lars Zühlsdorff, Trond Haugland

GEO ExPro Magazine

... of upgraded velocity information on the final image can be tested directly. In this case, seismic image quality suffers a lot if migration velocity in a few...

2021

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